You don't necessarily need a flat tire to get some use out of the 3wrencho tool.
The 3wrencho™ (Coated) is your best buddy when you have a flat. Unlike your other friends the 3wrencho™ is made of heat-treated steel, removes 15mm axle nuts and can pry tires off of rims. Don't worry, its glass-filled nylon coating is gentle on your pristine rims. Feel free to step on 3wrencho™ for added leverage when loosening axle nuts.